修正取得外部IP的取得方式

src/main/kotlin/Main.kt

@@ -46,30 +46,7 @@ fun main() {
 
     runBlocking {
         println("-------- [ 開始更新 DNS ] --------")
-        val client = OkHttpClient()
+        val ipAddress = getPublicIPAddress()
-        val request: Request = Request.Builder()
-            .url("https://ifconfig.me")
-            .addHeader("User-Agent", "")
-            .method("GET", null)
-            .build()
-        val ipAddress = try {
-            val response = withContext(Dispatchers.IO) {
-                client.newCall(request).execute()
-            }
-
-            if (response.isSuccessful) {
-                response.body()?.string() ?: run {
-                    println("無法取得 WAN IP 位址")
-                    return@runBlocking
-                }
-            } else {
-                null
-            }
-        } catch (e: IOException) {
-            null
-        } finally {
-            client.dispatcher().executorService().shutdown()
-        }
 
         if (ipAddress != null) {
             println("您目前的 WAN IP 位址為: $ipAddress")
@@ -143,3 +120,17 @@ private fun loadConfigFile(configRawText: String): Configure {
     println("欲更新的域名: $domain")
     return config
 }
+
+private fun getPublicIPAddress(): String? {
+    return try {
+        val client = OkHttpClient()
+        val request = Request.Builder()
+            .url("https://api64.ipify.org?format=text")
+            .build()
+        val response = client.newCall(request).execute()
+        response.body()?.string()?.trim()
+    } catch (e: Exception) {
+        e.printStackTrace()
+        null
+    }
+}